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Milwaukee's mayor and police chief said outsiders are fomenting the unrest that has wreaked havoc in a north side neighborhood for two nights since a black man was fatally shot by a black officer. Chris Coffey reports. (Published Monday, Aug. 15, 2016)

City leaders blamed outside agitators Monday after a second straight night of violence wracked Milwaukee's mostly black north side in protest at the fatal shooting of a black man by police.

An 18-year-old man was shot and wounded during Sunday night's unrest, which was milder and far less destructive than Saturday night's confrontation but still left the city tense. Mayor Tom Barrett singled out groups of young people on the streets of the Sherman Park neighborhood who he said were intent on causing trouble.

"Those individuals, in my mind, are deliberately trying to damage a great neighborhood in a great city," Barrett said at a news conference Monday.

Barrett warned parents and guardians that police will be strictly enforcing the city's 10 p.m. curfew for teenagers.

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"This is not the place where you go to gawk, this is not the place where you go to take pictures," he said. "This is not the place where you go to drive your car around."

The problems began Saturday afternoon after a black police officer shot and killed a black man after a traffic stop. Police say 23-year-old Sylville K. Smith was fleeing and had a stolen handgun when he was shot; they say bodycam footage clearly shows him holding the weapon.

Gov. Scott Walker on Sunday put the National Guard on standby, but so far no Guard members have been deployed.

Both Barrett and Police Chief Edward Flynn credited church groups and "many others" for staging peaceful demonstrations, prayers and vigils earlier Sunday, as well as volunteers who turned out to sweep and pick up debris after Saturday night's violence. He said they set the tone that made Sunday night's unrest less disruptive than it might have been.

Flynn blamed a Chicago chapter of the Revolutionary Communist Party for upending what had until then been a peaceful night by leading marchers down several blocks at around 11:30 p.m. TV footage showed a small group of protesters walking or running through the streets, sometimes toppling orange construction barriers.

Fourteen people were arrested. Three police officers and four sheriff's deputies were hurt.

The Wisconsin Department of Justice is investigating Smith's death, as required by state law for police-involved shootings. Barrett said he hoped the officer's body camera video could be released soon.

The 18-year-old Milwaukee man who was shot and wounded in Sunday night's violence was retrieved by a police armored vehicle and taken to a hospital. Flynn said the man "doesn't seem to be in medical danger." Police didn't say who shot the man but that they were looking for suspects.

Flynn said that while police came under fire Sunday night, "none of our officers returned fire."

Police cited Smith's "lengthy criminal record" as they identified him. Online court records showed a range of offenses that were mostly misdemeanors. In a more serious case, Smith was accused in a shooting last year and charged with recklessly endangering safety, a felony.

The Milwaukee Journal Sentinel reported that Smith was subsequently accused of pressuring the victim to recant statements that identified him as the gunman and was charged with trying to intimidate a witness. The charges were dropped because the victim recanted the identification and failed to appear in court, Chief Deputy District Attorney Kent Lovern told the newspaper Sunday.

Speaking at a Sunday night vigil, Smith's sister, Kimberley Neal, told The Associated Press that the family wants prosecutors to charge the officer who shot him.

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The anger at Milwaukee police is not new and comes as tension between black communities and law enforcement has ramped up across the nation, resulting in protests and the recent ambush killings of eight officers in Baton Rouge, Louisiana, and Dallas.

Nearly 40 percent of Milwaukee's 600,000 residents are black, and they are heavily concentrated on the north side.

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Critics said the police department should have been subjected to a full Justice Department investigation like the one done in Ferguson, Missouri, after the killing of black 18-year-old Michael Brown in 2014 touched off violence there.